Both bikes have a 7005 aluminum frame, which has higher
tensile strength than 6061 aluminum, and the new 500-watt-hour
Bosch battery. The sturdy frame is
useful for the forces placed on the
frame by a motor powerful enough
to assist up to 28 mph. What’s
slightly different is that both bikes
have the Bosch motor set on an
angle more in line with the downtube and battery offering a cleaner
look. Both have a suspension fork,
hydraulic disc brakes, fenders,
racks and Selle Royal racing saddles.

Both have very clean lines,
minimal cabling that’s routed internally, as well as the charcoal gray
finish with subtle Bulls logos on it.
Both have lights.

WHAT’S DIFFERENT?

The Six50 E2 Street hasstraight bars, Shimano DeoreGrinder. There’s a Supernova LEDlight on the back of the rear fenderand a small lamp on the front.

The Dail-E Grinder has drop
bars, Shimano Ultegra Di2 electric
shifting, better tires (Schwalbe
Marathon Supreme, as wide as
the Six50’s, but with a slicker
tread), and a Supernova M99 pro
light up front.

Which one is better? Let’s
examine these in detail.

DOING ITON THE DAIL-EAttracted by the drop bars andsophisticated components, wetook out the Dail-E Grinder first.The Di2 system doesn’t tap intothe battery; instead, it has its owncontroller positioned underneaththe stem. We made sure to top itoff before heading out. Chargingonly takes an hour or so, thenthey claim it’s good for up to 1000miles of riding. Plugging it in was abit of a kludge, though, as there’s components and Styx Ace of Pacetires which have a slightly knob-by tread. Also spec’d is the SRSuntour fork with 120mm of travel,almost double that of the Dail-Ea USB cable that has to plug intoa breakout box that then changesit over to a proprietary plug. Whythey couldn’t simply use a USB